Intervention effectmodel-written summary

Inoculation of watermelon seedlings by hypodermic needle infiltration or stab inoculation with bacterial suspensions produced water-soaked lesions within 24 to 48 h, whereas sterile-water controls showed no symptoms.

A claim from First Report of Bacterial Fruit Blotch of Watermelon in Oregon · 1997

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Inoculation of watermelon seedlings by hypodermic needle infiltration or stab inoculation with bacterial suspensions produced water-soaked lesions within 24 to 48 h, whereas sterile-water controls showed no symptoms.

Taxon
watermelonCitrullus lanatust0
Material
cv. Crimson Sweete3
Treatment
stab inoculation into hypocotylse3
Interactor
Acidovorax avenae subsp. citrulliParacidovorax citrullie4pathogen
Outcome
water-soaked lesionse2
Comparator
sterile watere0

Not reportedGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingDirectionValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Citrullus lanatus
Citrullus lanatus · TaxonKumon · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“First Report of Bacterial Fruit Blotch of Watermelon in Oregon”

✓ located verbatim in the source · title, characters 0–62
e2

“Hypocotyl and cotyledon inoculations produced water-soaked lesions within 24 to 48 h on both the hypocotyl and cotyledons or just the cotyledon, respectively, on plants inoculated by either method”

✓ located verbatim in the source · abstract, characters 1464–1660
e3

“Pathogenicity of two strains was confirmed in three separate tests by hypodermic needle infiltration of cotyledons or by stab inoculation into hypocotyls of 12 to 24 21-day-old cv. Crimson Sweet seedlings with aqueous suspensions of bacteria”

✓ located verbatim in the source · abstract, characters 1038–1279
e4

“showed a similarity of 0.971 to the Biolog description for Acidovorax avenae subsp. citrulli”

✓ located verbatim in the source · abstract, characters 944–1036
e0

“No symptoms developed on control plants infiltrated or stabbed with sterile water only”

✓ located verbatim in the source · abstract, characters 1662–1748

Title

First Report of Bacterial Fruit Blotch of Watermelon in Oregon

P. B. Hamm; D. S. Spink; G. H. Clough; et al. Plant Disease 1997. doi:10.1094/pdis.1997.81.1.113a

Other claims from this paper (5)

Record rev-5c3a4e81e399e9862520da4fa84b7943ef5d49634429991dcb27322ce8f31f5f · schema claims-v0.9 · position 3 in the model’s answer

inoculation · Paracidovorax citrulli · Citrullus lanatus (watermelon)Positive and negative results

7 papers: 2 positive, 5 negative or no effect

4 papers in the same direction as this claim · 2 in the opposite direction

  1. positive
    After disinfection, pericarp inoculated seeds had at least 89.5% reduction in disease transmission, exceeding stigma inoculated seeds.

    Embryo Localization Enhances the Survival of Acidovorax citrulli in Watermelon Seeds · 2016 · compared with stigma inoculation

    Opposite direction

  2. positive
    Co-inoculation with CBMB110 and CW903 in co-aggregated form drastically reduced the number of Acidovorax citrulli on watermelon leaves.

    Seed priming with co-aggregated Azospirillum and Methylobacterium cells reduce the bacterial fruit blotch incidence in watermelon · 2025

    Opposite direction

  3. negative
    The strains caused symptoms on inoculated watermelon seedlings.

    Natural Outbreak of a Bacterial Fruit Rot of Cantaloupe in Georgia Caused by Acidovorax avenae subsp. citrulli · 2000

    Same direction

  4. negative
    Stigma inoculation gave faster colonization of watermelon ovules by A. citrulli than pericarp inoculation.

    Pathways of bacterial invasion and watermelon seed infection by Acidovorax citrulli · 2014 · compared with pericarp inoculation

    Same direction

  5. no effect
    Separately inoculated groups showed no significant population difference in watermelon cotyledons.

    Further Characterization of Host Preference of Acidovorax citrulli Based on Growth Competition between Group I and Group II Strains · 2022 · compared with two groups of strains

    Same direction

  6. negative
    Inoculated watermelon seedlings developed necrotic lesions and collapsed cotyledons.

    First Report of Bacterial Fruit Blotch on Melon Caused by Acidovorax citrulli in California · 2014 · compared with negative controls

    Same direction

See all 7 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.